Obsidian Order (cufflink ankers)
Obsidian is a naturally occurring volcanic glass. Usually occurring in dark colours such as brown, green and black Snowflake Obsidian, which is essentially black Obsidian but with small inclusions of the mineral cristobalite, which radiate out forming the appearance of tiny white snowflakes in the stone.
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Numis Zimbabwe 2008 $100000000000000 - One Hundred Trillion (cufflink ankers)